Gas solution production apparatus

A gas solution production apparatus, comprising:

• a gas dissolving unit that dissolves a gas of a second raw material into a liquid of a first raw material to generate a gas solution with a predetermined concentration;
• and
• a gas-liquid separation unit that subjects the gas solution generated by the gas dissolving unit to gas-liquid separation into a supply liquid that is supplied to a use point, and an exhaust gas that is discharged from an exhaust port,
• wherein the gas dissolving unit comprises
• a first nozzle that atomizes the liquid of the first raw material,
• a mist mixing section that mixes the liquid of the first raw material which is atomized by the first nozzle and the gas of the second raw material, and generates a gas solution with a higher concentration than the predetermined concentration, and
• a liquid mixing section that mixes the gas solution with the high concentration generated by the mist mixing section and the liquid of the first raw material, and generates the gas solution with the predetermined concentration.